In a way, it's encouraging to read that the main limitation is the supply of nursery-grown seedlings. That is an engineering / logistical problem that can be solved with strategic planning and hard work. In many parts of the tropics, the bigger limitation is the number of people who care enough to start reforesting in the first place. All of the projects that I've seen have thousands upon thousands of extra seeds that they simply cannot use (nursery space and volunteer labour being the limiting factors), but there is no one else interested in planting them, so they get tossed in a nearby pasture to fend for themselves or simply composted. The forest produces abundance, if only more people would appreciate it...
Even for fruit tree seeds and seedlings, which produce an abundance of pure and nutritious food, the supply greatly exceeds the demand. For examples, all of these projects have excess seed and seedling production that they literally cannot give away due to lack of interest:
- https://lumiconlife.wordpress.com/list-of-plants/
- https://peacefulvillage.org/plants-for-sale/
- https://amazonrestore.codeberg.page/badass-fruiterrarist-land/plant-wish-list/#available-for-trade
For anyone reading this who is looking to swap plants or seeds, there is !plantswap@mander.xyz where you can connect with other growers. Lack of seed(ling) availability is all too often a distribution problem, not a true scarcity problem, so let's try to help each other fix that.